Skip Navigation

EcoEdDL

Home Browse Resources Submission Instructions About Help Advanced Search

Browse Resources

Ecological Core Concepts -- Populations -- Life history traits and reproduction

Resources
View Resource A female rotifer (Brachionus calyciflorus) with two eggs

A female rotifer (Brachionus calyciflorus) with two eggs. The eggs are the result of parthenogenesis, or asexual reproduction by the female, which occurs in rotifers when growing conditions are...

Thumbnail
http://www.esajournals.org/doi/abs/10.1890/04-1400
View Resource A Galapagos sea lion (Zalophus wollebaeki) nurses a pup.

In mammals, lactation has important effects on maternal and offspring fitness. Pinnipeds (fin-footed mammals) are a good mammalian group for research studies that focus on lactation because in...

Thumbnail
http://www.esajournals.org/doi/abs/10.1890/04-0319
View Resource A periodical cicada (Magicicada sp.) molts on the side of a tree after emerging from underground.

A periodical cicada (left) has mostly freed itself from its old exoskeleton (right). The cicada's new exoskeleton is light in color and has not yet hardened. Every 13 or 17 years, periodical cicadas...

Thumbnail
http://www.esajournals.org/doi/abs/10.1890/06-0570.1
View Resource Are males cheaper than females? Male and female costs of reproduction

In this TIEE experiment, students investigate the costs of reproduction. In dioecious plants, a female's investment in reproduction is typically much greater than a male's, because while both sexes...

http://tiee.esa.org/vol/v7/experiments/stehlik/abstract.html
View Resource Cemetery Demography

This laboratory exercise examines the changes in human demographic patterns by visiting a local cemetery, collecting data recorded on tombstones, and producing a graphical representation of...

View Resource Demographic vital rates and population growth: an introduction to projection matrices and elasticity analysis

In this TIEE dataset, students address the question of how changes in demographic vital rates influence the rate of population growth. Students learn how projection matrices and elasticity...

http://tiee.esa.org/vol/v7/issues/data_sets/conard/abstract....
View Resource Desert star (Monoptilon bellioides) flowers in bloom.

Desert star (Monoptilon bellioides) flowers in bloom. Desert star is an annual plant that grows in very arid regions of the southwestern United States. Desert star and other desert annuals may delay...

Thumbnail
http://www.esajournals.org/doi/abs/10.1890/06-1495
View Resource Hoopoe Lark (Alaemon alaudipes) nest in the Arabian Desert.

Two eggs are visible in this Hoopoe Lark (Alaemon alaudipes) nest. This lark species generally produces 2–3 chicks per brood. This lark lives in a desert environment, and compared to closely related...

Thumbnail
http://www.esajournals.org/doi/abs/10.1890/03-0170
View Resource Pathways to Scientific Teaching, Chapter 3c of 7: Determining confidence: sex and statistics

In this article we demonstrate the use of a primary research paper as an assessment tool, helping to determine how well students understand a biological concept and their ability to interpret...

View Resource Pathways to Scientific Teaching, Chapter 5a of 7: Novel assessments: detecting success in student learning

This article illustrates how multiple methods can be used to assess student understanding of the “novel weapons hypothesis” presented in the Callaway and Ridenour review of theories regarding...

Next →

Log In:





OR